Orientation relationship and interfacial structure between Nb solid solution precipitates and alpha-Nb(5)Si(3) intermetallics

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	Orientation relationship and interfacial structure between Nb solid solution precipitates and alpha-Nb(5)Si(3) intermetallics
	G. M. Cheng; Y. X. Tian; L. L. He
	2009
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	24 期号:1 页码:192-197
摘要	The orientation relationship (OR) and the interfacial structure between Nb solid solution (Nbss) precipitates and alpha-Nb(5)Si(3) intermetallics have been investigated by transmission electron microscopy (TEM). The OR between Nbss and alpha-Nb(5)Si(3) was determined by selected-area electron diffraction analyses as (222)(Nb)//(002)(alpha) and [1 (1) over bar0](Nb)//[1 (1) over bar0](alpha) High-resolution TEM images of the Nbss/a-Nb5Si3 interface were presented. Steps existed at the interface that acted as centers of stress concentration and released the distortion of lattices to decrease the interfacial energy. In addition, the interfacial models were proposed based on the observed OR to describe the atomic matching of the interface. The distribution of alloying elements at the Nbss/alpha-Nb(5)Si(3) interface has also been investigated, and Hf was enriched at the interface to strengthen the grain boundary.
部门归属	[cheng, g. m.; he, l. l.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [cheng, g. m.] chinese acad sci, grad sch, beijing 100039, peoples r china. [tian, y. x.] chinese acad sci, inst met res, superalloy div, shenyang 110016, peoples r china.;he, ll (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;llhe@imr.ac.cn
关键词	In-situ Composites Silicide-based Composites Alloys Phase Microstructure Boundaries Behavior
URL	查看原文
WOS记录号	WOS:000267207500024
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31844
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. M. Cheng,Y. X. Tian,L. L. He. Orientation relationship and interfacial structure between Nb solid solution precipitates and alpha-Nb(5)Si(3) intermetallics[J]. Journal of Materials Research,2009,24(1):192-197.
APA	G. M. Cheng,Y. X. Tian,&L. L. He.(2009).Orientation relationship and interfacial structure between Nb solid solution precipitates and alpha-Nb(5)Si(3) intermetallics.Journal of Materials Research,24(1),192-197.
MLA	G. M. Cheng,et al."Orientation relationship and interfacial structure between Nb solid solution precipitates and alpha-Nb(5)Si(3) intermetallics".Journal of Materials Research 24.1(2009):192-197.